Liver and gall balloon dilatation tube
The hepatobiliary balloon dilatation tube, designed with multi-layered composite materials and a spiral texture, solves the problems of slippage and easy material damage, achieving precise dilation and simplifying the operation, thus reducing the difficulty of the surgery.
Patent Information
- Application Number
- CN202422921437.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Existing hepatobiliary balloon dilatation tubes are prone to slippage during use, are easily damaged, have complex connection structures, and are cumbersome to operate, increasing the difficulty of surgery.
The balloon is designed with a multi-layered composite material. The outer polyimide material provides high strength and corrosion resistance, while the inner silicone material is soft. The spiral texture on the outer wall of the balloon increases friction. The pressurization tube and the expansion tube can be quickly assembled and disassembled through the insertion of nesting blocks and auxiliary blocks.
It reduces damage to the bile duct wall, prevents slippage, ensures precise dilation, simplifies the operation, reduces surgical difficulty, and improves efficiency.
Smart Images
Figure CN223731919U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field more specifically, the utility model relates to a kind of hepatobiliary balloon dilatation tube. BACKGROUND
[0002] Hepatobiliary balloon dilatation tube is important medical instrument for dilatation treatment of hepatobiliary duct narrow site, commonly used to improve bile duct stricture, promote bile excretion.However, the existing dilatation tube design usually has the following problems: first, ballon dilatation is prone to slip, resulting in inaccurate dilatation position;Second, the material of the balloon is single, which is easy to break under high pressure or cause damage to the bile duct wall;Finally, the connection structure of part of the dilatation tube is complex, and the operation is cumbersome, which is not convenient for quick disassembly and replacement, and increases the difficulty of operation, therefore, in view of the above problems, a hepatobiliary balloon dilatation tube is proposed. SUMMARY
[0003] In order to overcome the above-mentioned defects of the prior art, the embodiments of the utility model provide a hepatobiliary balloon dilatation tube, which is designed by a multi-layer composite material balloon, the outer polyimide material provides high strength and corrosion resistance, the inner silicone material is soft, which reduces the damage to the bile duct wall;The spiral texture of the outer wall increases the friction force, prevents slipping and uniformly distributes the dilatation pressure;The plug-in design of the booster pipe and the dilatation pipe realizes quick disassembly and assembly.
[0004] To achieve the above object, the utility model provides the following technical scheme: a hepatobiliary balloon dilatation tube, including booster pipe, one end of the booster pipe is inserted and fixedly connected with hepatobiliary balloon dilatation tube, one end of the hepatobiliary balloon dilatation tube is provided with balloon body, one end of the booster pipe is fixedly connected with plug-in nest block, one end of the plug-in nest block is inserted in the inside of hepatobiliary balloon dilatation tube, the outer end of the hepatobiliary balloon dilatation tube is fixedly connected with auxiliary block, the outer end of the auxiliary block is inserted with first plug, the first plug is fixedly connected with booster pipe, the inside of the first plug is provided with first auxiliary groove, the inside of the first auxiliary groove is movably provided with first moving rod, the inside of the auxiliary block is provided with second auxiliary groove, the inside of the second auxiliary groove is movably provided with second moving rod, the second moving rod passes through the second auxiliary groove and is inserted and fixed in the inside of the first auxiliary groove.
[0005] In a preferred embodiment, one end of the plug-in nest block is wedge-shaped, and a dirt slot is formed in the wedge-shaped end of the plug-in nest block.
[0006] In a preferred embodiment, one end of the hepatobiliary balloon dilatation tube is fixedly connected with a second plug, and one end of the booster pipe is provided with a plug slot, and the second plug is inserted in the plug slot.
[0007] In a preferred embodiment, the first moving rod is fixedly connected with a pressing sleeve through the first auxiliary groove, and the pressing sleeve is made of silica gel.
[0008] In a preferred embodiment, the first auxiliary groove is internally provided with a first spring, and the second auxiliary groove is internally provided with a second spring.
[0009] In a preferred embodiment, the balloon body is a multi-layer composite structure, the outer layer is made of polyimide material, the inner layer is made of silica gel material, the thickness of the outer layer of polyimide material is 0.2 mm, and the thickness of the inner layer of silica gel material is 0.3 mm; the outer wall surface of the balloon body is provided with a spiral concave-convex texture, the pitch of the spiral texture is 1.5 mm, and the depth of the texture is 0.2 mm, so that the spiral concave-convex texture can increase the friction between the balloon body and the bile duct wall during expansion, and prevent the balloon body 3 from sliding.
[0010] The technical effects and advantages of the utility model are as follows: the outer layer of polyimide material provides high strength and corrosion resistance, the inner layer of silica gel material is soft, and the damage to the bile duct wall is effectively reduced; the spiral concave-convex texture on the outer wall of the balloon can increase the friction and prevent the balloon from slipping, and at the same time, the expansion pressure is more evenly distributed, and the expansion effect is improved; the connection between the booster pipe and the liver and gallbladder balloon expansion pipe is designed through the plug-in nesting block and the auxiliary block, so that the device can be quickly and stably disassembled and assembled, the operation steps are simplified, and the difficulty of the operation is reduced; through the reasonable layout of the first auxiliary groove, the second auxiliary groove and the pressing sleeve, the operation convenience and use efficiency of the device are further improved, and the utility model has remarkable practical value and innovation. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a schematic diagram of the three-dimensional structure state of the liver and gallbladder balloon expansion tube of the utility model.
[0012] Figure 2 It is a schematic diagram of the three-dimensional structure of the booster pipe of the utility model.
[0013] Figure 3 It is an enlarged view of the structure A of the utility model. Figure 2
[0014] Figure 4 It is a schematic diagram of the three-dimensional structure state of the balloon body of the utility model.
[0015] Among them: 1, booster pipe; 2, liver and gallbladder balloon expansion tube; 3, balloon body; 4, plug-in nesting block; 5, visceral slot; 6, auxiliary block; 7, first plug; 8, second plug; 9, plug-in groove; 10, first auxiliary groove; 11, first moving rod; 12, first spring; 13, second auxiliary groove; 14, second moving rod; 15, second spring; 16, pressing sleeve. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0017] A kind of hepatobiliary balloon dilatation tube, including booster pipe 1, booster pipe 1 one end is inserted and fixedly connected with hepatobiliary balloon dilatation tube 2, hepatobiliary balloon dilatation tube 2 one end is provided with balloon body 3, booster pipe 1 one end is fixedly connected with insert nest block 4, insert nest block 4 one end is inserted in hepatobiliary balloon dilatation tube 2 inside, hepatobiliary balloon dilatation tube 2 outer end is fixedly connected with auxiliary block 6, auxiliary block 6 outer end is inserted with first insert block 7, first insert block 7 is fixedly connected with booster pipe 1, first insert block 7 is provided with first auxiliary slot 10 inside, first auxiliary slot 10 is movably provided with first mobile rod 11 inside, second auxiliary slot 13 is opened in auxiliary block 6 inside, second auxiliary slot 13 is movably provided with second mobile rod 14 inside, second mobile rod 14 is inserted and fixed in first auxiliary slot 10 inside by passing through second auxiliary slot 13;First mobile rod 11 and second mobile rod 14 are connected by precise sliding fit, ensure that sliding is smooth and stable in the process of use;The internal shape of auxiliary slot 13 and auxiliary slot 10 is designed as circular structure, to facilitate the transverse positioning of mobile rod 11 and 14, simultaneously, through precise size control, limit function is realized, to avoid the deviation or jam of mobile rod when operating;First insert block 7 and auxiliary block 6 are fixed by screwing through thread, and an anticorrosion material layer is coated on the outer end surface of auxiliary block 6, which enhances the anti-aging performance of the device in long-term use;When first insert block 7 cooperates with the mobile rod inside auxiliary slot 10, its surface is treated by superfine polishing, to ensure the smoothness of plugging process, thereby further improving the convenience of the device in actual operation;In addition, the outer surface of mobile rod 11 is provided with anti-skid groove, to increase the friction force when it contacts with fingers, to enhance the control feeling and improve operation efficiency;Second auxiliary slot 13 is made by precise milling process, and the internal smoothness reaches 0.2 microns, to ensure the sliding precision and sealing performance between mobile rod and slot.
[0018] Then, the one end of the plug-in nesting block 4 is provided in a wedge shape, and a dirt receiving groove 5 is formed at the wedge-shaped end of the plug-in nesting block 4; the opening width of the dirt receiving groove 5 is 2 mm, and the groove depth is 0.5 mm, which can effectively accommodate foreign matter that may be left during operation, and ensure that the plug-in nesting block 4 will not be hindered by contaminants when inserted into the liver and gall bladder balloon dilatation tube 2, thereby affecting the smoothness of the operation; the wedge shape of the plug-in nesting block 4 not only facilitates insertion into the dilatation tube 2, but also forms a gradually increasing friction force during insertion, thereby achieving stable connection; the inclination angle of the wedge is designed to be 25 degrees, which not only ensures smooth insertion, but also provides sufficient anti-dropping performance; the inner surface of the dirt receiving groove 5 is treated with a hydrophobic coating, which can reduce the entry of liquid that may be attached during surgery into the groove, and the groove bottom is provided with a mesh pore structure, which facilitates regular cleaning and discharge of residues; in addition, the surface of the plug-in nesting block 4 is also coated with a high-strength wear-resistant coating, which can maintain the surface intact during high-frequency plug-in operation, thereby prolonging the service life.
[0019] Then, the liver and gall bladder balloon dilatation tube 2 is fixedly connected with a second plug-in block 8 at one end, and the booster pipe 1 is provided with a plug-in slot 9 at one end, and the second plug-in block 8 is inserted into the plug-in slot 9; the second plug-in block 8 is designed in a tapered transition structure to ensure gradual stable connection during insertion, and the surface is coated with an antibacterial material to effectively reduce the risk of cross infection that may occur during operation due to contact; the inner size of the plug-in slot 9 is a precision tolerance fit, allowing the second plug-in block 8 to form a slight elastic interference when inserted, thereby further improving the firmness of the connection; a small guide slope is formed at the edge of the plug-in slot 9, which can provide auxiliary guidance during insertion to avoid insertion difficulties due to operation errors; in addition, a locking buckle structure is provided at the junction of the second plug-in block 8 and the plug-in slot 9, which automatically pops out and fixes when the plug-in block is fully inserted, thereby avoiding loosening of the plug-in block due to external forces.
[0020] Next, the first moving rod 11 is fixedly connected with a pressing sleeve ring 16 through the first auxiliary slot 10, and the pressing sleeve ring 16 is made of silicone material; the outer diameter of the pressing sleeve ring 16 is designed to be 10 mm in diameter, which conforms to the ergonomics of the human body, and the surface is designed with an anti-slip texture to effectively improve the gripping force of medical personnel during operation; the silicone material is of medical grade, with high wear resistance and antibacterial properties, which can maintain stable performance during high-strength operation, while reducing the risk of bacterial attachment; the pressing sleeve ring 16 is fixedly connected with the moving rod 11 by hot melt welding technology, thereby ensuring the firmness of the connection, and avoiding the shedding hazards that may be caused by traditional adhesive methods; the inner surface of the sleeve ring 16 is provided with an annular buffer cavity, which can provide additional flexible rebound effect during pressing, thereby reducing hand fatigue caused by long-time operation; in addition, the surface of the sleeve ring 16 is subjected to precision polishing treatment, and the edge is free of sharpness, thereby further improving the comfort of use.
[0021] At this time, the first auxiliary groove 10 is internally provided with a first spring 12, and the second auxiliary groove 13 is internally provided with a second spring 15; both the first spring 12 and the second spring 15 are made of nickel-titanium alloy material, have high elastic modulus and fatigue resistance, and can maintain stable elastic recovery force in long-term use; the first spring 12 has a design length of 10 mm and a working compression amount of 3 mm, and can provide appropriate resilience for reset operation; the second spring 15 has a design length of 8 mm and a compression amount of 2 mm, and is used to control the reset of the second moving rod 14; the two ends of the spring are specially processed into flat end faces, and the contact with the moving rod is more uniform, thereby improving the working stability of the spring; in addition, the surfaces of the two springs are subjected to oxidation resistance treatment to adapt to the long-term use requirement in a high-humidity environment.
[0022] It should be noted that the balloon body 3 is a multi-layer composite structure, the outer layer is polyimide material, and the inner layer is silica gel material, the thickness of the outer layer polyimide material is 0.2 mm, and the thickness of the inner layer silica gel material is 0.3 mm; the outer wall surface of the balloon body 3 has a spiral concave-convex texture, the pitch of the spiral texture is 1.5 mm, and the depth of the texture is 0.2 mm; the spiral concave-convex texture can increase the friction between the balloon body 3 and the bile duct wall during expansion, preventing the balloon body 3 from sliding; in addition, the design of the spiral texture can provide radial friction while forming a certain axial guiding effect during expansion, which helps the uniform expansion of the balloon in the bile duct, thereby improving the precision of the operation; the selection of the outer layer polyimide material has high temperature resistance and corrosion resistance, which can ensure the long-term stability of the balloon in an autoclave environment, while the inner layer silica gel material provides a soft touch, reducing the risk of damage to the bile duct wall; the depth of the spiral texture is verified by experiments to maintain smooth surface while increasing friction, avoiding scratching the bile duct wall by the texture edge, and the ratio of the pitch and the depth further optimizes the pressure distribution effect, making the expansion more uniform and safe.
Claims
1. A hepatobiliary balloon dilatation catheter comprising a pressurizing tube (1), characterized in that: The pressurizing pipe (1) is fixedly connected with a liver and gall bladder balloon dilatation tube (2) at one end, the liver and gall bladder balloon dilatation tube (2) is provided with a balloon body (3) at one end, the pressurizing pipe (1) is fixedly connected with an insertion nesting block (4) at one end, the insertion nesting block (4) is inserted into the liver and gall bladder balloon dilatation tube (2), the liver and gall bladder balloon dilatation tube (2) is fixedly connected with an auxiliary block (6) at the outer end, the auxiliary block (6) is inserted with a first insertion block (7) at the outer end, the first insertion block (7) is fixedly connected with the pressurizing pipe (1), the first insertion block (7) is provided with a first auxiliary groove (10) in the inside, the first auxiliary groove (10) is movably provided with a first movable rod (11) in the inside, the auxiliary block (6) is provided with a second auxiliary groove (13) in the inside, the second auxiliary groove (13) is movably provided with a second movable rod (14) in the inside, the second movable rod (14) is inserted and fixed in the first auxiliary groove (10) through the second auxiliary groove (13).
2. The hepatobiliary balloon dilating catheter of claim 1, wherein: The insertion nesting block (4) is provided with a wedge shape at one end, and the wedge shape at one end of the insertion nesting block (4) is provided with a dirty slot (5).
3. The hepatobiliary balloon dilating catheter of claim 1, wherein: The liver and gall bladder balloon dilatation tube (2) is fixedly connected with a second insertion block (8) at one end, and the pressurizing pipe (1) is provided with a insertion slot (9) at one end, and the second insertion block (8) is inserted into the insertion slot (9).
4. The hepatobiliary balloon dilating catheter of claim 1, wherein: The first movable rod (11) is fixedly connected with a pressing sleeve ring (16) through the first auxiliary groove (10), and the pressing sleeve ring (16) is made of silica gel material.
5. The hepatobiliary balloon dilating catheter of claim 1, wherein: The first auxiliary groove (10) is provided with a first spring (12) in the inside, and the second auxiliary groove (13) is provided with a second spring (15) in the inside.
6. The hepatobiliary balloon dilating catheter of claim 1, wherein: The balloon body (3) is a multi-layer composite structure, the outer layer is polyimide material, the inner layer is silica gel material, the thickness of the outer layer polyimide material is 0.2 mm, and the thickness of the inner layer silica gel material is 0.3 mm; the outer wall surface of the balloon body (3) has a spiral concave-convex texture, the pitch of the spiral texture is 1.5 mm, and the depth of the texture is 0.2 mm, the spiral concave-convex texture can increase the friction between the balloon body (3) and the bile duct wall during the expansion process, and prevent the balloon body (3) from sliding.